<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <p key="A">{{A}}</p>
        <p key="B">{{B}}</p>
        <p key="C">{{C}}</p>
        <p key="D">{{D}}</p>
        <button key="E">{{age.value}}</button>
    </div>
    <script type="module" src="./index.js"></script>
</body>
</html>